Avatar Animation via Kinect v2

var joint;     //the joint of kinect
var parent = joint.Parent();

var localOrientation = BABYLON.Quaternion.Inverse(parent.Orientation).Multiply(joint.Orientation);

But I'm having trouble in the transformation of the reference coordinate between kinect joints and avatar bones int the babylon scene...

I tried to change the axes by swapping values (x, y, z), but I'm probably wrong

var kinectOrientation;        //orientation of the joint expressed in quaternion

return new BABYLON.Quaternion(kinectOrientation.y,
                              kinectOrientation.x,
                              kinectOrientation.z,
                              kinectOrientation.w);   //this is just one example, I have tried in different cases

Do you have any advice?

Thanks in advance